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拱坝由于工程量少、造价低、超载能力强、内部应力分布均匀、运行安全等优越的技术经济性能,逐渐成为坝工界较为推崇的坝型之一。我国于20世纪50年代开始修建混凝土拱坝,目前国内绝大部分混凝土拱坝修建在低纬度地区,技术已较成熟。但在本工程所在地多年平均气温5℃、极端最高气温39.4℃、极端最低气温-41.2℃的严酷气候条件下进行常态混凝土拱坝施工,目前尚无较成熟的经验可以借鉴,对坝工界来说仍是一个挑战,仍有众多技术难题需要进一步研究和解决。本文从施工角度对新疆北部某混凝土拱坝的关键施工技术进行介绍。
Due to its low engineering cost, low cost, overloading capacity, uniform internal stress distribution and safe operation, the arch dam has gradually become one of the most respected dam types in dam industry. China began construction of concrete arch dam in the 1950s. At present, most of the concrete arch dams in China are built at low latitudes, and the technology is relatively mature. However, the construction of normal concrete arch dam under severe climatic conditions with average annual temperature of 5 ° C, extreme maximum temperature of 39.4 ° C and extreme minimum temperature of -41.2 ° C at the project site, there is no more mature experience to draw lessons from, To say that it is still a challenge, there are still many technical problems that need further study and resolution. This article introduces the key construction technology of a concrete arch dam in the north of Xinjiang from the perspective of construction.